(i) Lock and Feed Block.
Raise the cover, turn the crank handle on to the buffer spring, see that the extractor drops, place finger between the extractor and stop, raise the lock and allow the crank handle to come slowly back on to the check lever; slide the live cartridges out of the extractor, keeping the latter down. Give the lock ⅛ turn to the left and lift off. Lift the feed block out.
(ii) Fusee Spring Box.
With the right hand at the rear and the left hand at the front, press the box forward until clear of the lugs, and remove. Disconnect the fusee chain and remove the box and the spring. Care should be taken to throw no cross strain on the chain.
(iii) Tangent Sight and Cover Lock.
Lower the cover, putting a screwdriver across the breech casing under the gunmetal block, drive out the axis pin of the stem and remove with its piston and spring. Close the cover, press in the cover lock, and, with the large screwdriver, remove the stop screw; the lock with its piston and spring can then be removed.
(iv) Cover.
Drive out the fixing pin of the cover joint pin, remove the collar and joint pin and take off the cover.
(v) Rear Crosspiece.
Drive out the tapered fixing pin, grasp with the left hand the left handle of the rear crosspiece, slightly raise the casing and, with the mallet, strike the top edges of the casing alternately until the rear crosspiece is clear of the dovetails on the casing. Lift out the trigger bar.